Really great quality for the most part--there were a few tiles with defects, but not very many. They were packed well, too. They adhere very well to painted drywall; if you make a mistake and need to take them off, it's a pain, and they will pull off some of your wall, but I figure this is a good sign of their sticking ability. I chose not to use a wet saw and went with a score and snap tool. I learned from my mistakes pretty quickly and realized this doesn't make cutting easy around outlets. Thus, if want a flawless look, I recommend using a wet saw to cut these. I was too lazy to do it, and I still think it turned out pretty great. Just depends on how much of a perfectionist you are! I would definitely recommend these if you're willing to work with glass, which is arguably more difficult than something like ceramic tile. However, one of the things I loved best about these glass tiles is you don't have to use grout (though you can if you want to).